When the LG Logo stays lit up after turning off the TV, it is compensating. Usually lasts about 1.5 minutes, after which there is a 'click' and the logo fades to off...There was a few people a while back I remember asking how they would know if the tv was making its adjustments after it was shut off and most were saying to listen for the clicks. That works but I noticed last night that there is a red light showing from the back of mine after the tv is turned off but making adjustments. I believe it's the optical light showing but couldn't get far enough behind the tv to be sure. All I know is it stayed on until the final clicks.